Hi all,
I am using the TMS320F28335 Delfino Experimental kit.
I am trying to understand how the connection and control signals work between the USB connector (JP2) to JTAG device (F28335) via the FTDI chip (FT2232D) to Emulator header (14-pin).
The data from the USB is given to the FTDI chips, which provides all the signals (TCK,TMS,TDO,TDI and TRSTn) to the Emulator header, except the EMU0 and EMU1. The EMU0/1 are connected to the F28335 via a pull pup resistor of 4.7K.
I read that the state of EMU0/1 are used to detect Wait-in Reset which is controlled by debugger. From debugger I understand use of CCS software or other debugging software.
I have four question.
How are the EMU0/1 signals generated or changed by the debugger if there is no connection between the EMU pins and FTDI chip ? As they are only connected with F28335.
What is Wait-in Reset ? Is it the option available in CCS to reset the CPU ?
What other purpose are served by the EMU pins?
What is the jumper J9, near the JTAG header used for?
Thank you
Best Regards,
Pankaj
